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You can still do the equivalent of a chain, update and write in SQL.

Chain equivalent:
select fld1 into :FLD1
from file1
where condition1=:KEY1
fetch first row only

Update:
Update file1 set FLD1=:FLD1
Where condition1=:Key1

Write:
Insert into file1
(FLD1)
Values(:FLD1)

-----Original Message-----
From: RPG400-L <rpg400-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Greg Wilburn
Sent: Thursday, August 18, 2022 10:05 AM
To: RPG programming on IBM i <rpg400-l@xxxxxxxxxxxxxxxxxx>
Subject: SQL vs Native

CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe.


I'm developing logic to create a "transactional" file/table in an existing RPG program that creates labels.
I'm trying to capture information about the labels we produce using a service program procedure and SQL.

The catch is that the users will, on occasion, recreate/reprint a set of labels. So I need to ensure I'm not creating duplicate transactions.

With native access, I would simply CHAIN then UPDATE or WRITE based on %FOUND.
With SQL, I would have to do a DELETE then INSERT for each record.
Just wondering if there's an alternative to the SQL method?

I'm trying to go 100% SQL for file access.

Thanks,
Greg
[Logo]<https://www.totalbizfulfillment.com/> Greg Wilburn
Director of IT
301.895.3792 ext. 1231
301.895.3895 direct
gwilburn@xxxxxxxxxxxxxxxxxxxxxxx<mailto:gwilburn@xxxxxxxxxxxxxxxxxxxxxxx>
1 Corporate Dr
Grantsville, MD 21536
www.totalbizfulfillment.com<http://www.totalbizfulfillment.com>
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